Al-Qaeda terror suspect arrested after breaching conditions

The 24-year-old man – who MI5 believe is a potential suicide bomber – was subject to an order imposed by home secretary Theresa May banning him from the London 2012 venues.

The terror suspect was able to travel through Olympic Park five times (PA)

Counter-terrorism officers detained the suspected jihadist following the apparent breaches of the order and he is now in custody awaiting a court hearing.

News that he was able to travel through Stratford, east London has raised concerns about security at the site just weeks before the Games get underway.

Officials from the security services regard the location as a significant target for terrorists and it is meant to be heavily protected.

The suspect, named only as CF, is viewed as a risk to national security and is one of only nine people in the country who are subject to Terrorism Prevention and Investigation Measures, which control their movements and who they can contact, both in person and online.

He was first arrested four years ago while allegedly trying to travel to Afghanistan to fight alongside the Taliban against British soldiers.

CF subsequently fled to Somalia, where it is believed he fought for Islamist group Al Shabaab and tried to recruit other Britons to the cause.

Somali authorities sent him back to the UK last March and the Home Office imposed an order designed to prevent him entering Olympic Park.

However, he was apparently able to travel through Stratford station using a London Overground rail route on five occasions in April and May.

It is believed he was discovered because the order requires him to wear an electronic tag and authorities traced his movements using GPS technology.